Refereeing at the 2014 World Cup will be radically altered with the possible introduction of goal-line technology and the use of extra officials, a top FIFA executive said.

FIFA have come under increasing pressure to introduce technology and video replays after a series of howlers at the World Cup.

England's Frank Lampard had a perfectly good goal ruled out against Germany when the officials failed to spot the ball had landed behind the line after coming off the crossbar.

FIFA general secretary Jerome Valcke said the Lampard incident had been a "bad day" for organisers.

"We're talking about a goal not seen by the referee which is why we are talking about new technology," Valcke told the BBC.

He also suggested that the use of two extra assistant referees positioned on the goal-line - a system trialled last season in the Europa League - might also be used in future World Cups.

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